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NATHANIEL L. C HAMBERLAIN, OF 'ROXBIIRIC MASSACHUSETTS. 4

Letters. Patent No. 63,01-7, dated March 19, 1.867.

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TO ALLWHOM IT MAY CONGERNz.

Be it known that I, N. L. CHAMBERLAIN, of West Roxbury, in the county of Norfolk, and State of Massachusetts, have .invented new and useful improvemcntsin Hand-Stamps; and Ido hereby declare that the following is a full, clear, and exact description thereof, which will enable those lskilled in the art-tomake and use the saine, referencev being had to-the accompanying drawings, forming part of this specification, in which- Figure 1 is a side elevation ofl a hand-stamp with my improvements applied thereto. l

Figure 2 is a plan or top view.

Figure 3 is a' top view ofthe head of the vibrating bar, the cap having been removed'7 showing the cavities therein for the reception of the ink-ribbon. i

Figure 4 is a vertical section of the head of the vibratingbar, taken o n v the plane of the line gfl.

'Similar letters-.of reference indicate corresponding parts.

The natureof my invention oo nsists- 1'. In making or forming cavities in the head of the vibrating bar for the reception of the rolls ofinkribbon, when such cavities open outward, (not inwa1d,) as will be-presently more specifically stated.

2. In theemployment of a movable cap in combination with the recesses made in the head of a vibrating bar for the purpose of protecting -andcencealing the rolls of ink-ribbon.

' i In the employment of a spring-catch of novel construction for holding the die or die plate in its proper position for printing. l

d. In a novel manner of attaching the ink-ribbon to the shaft, as will be presently described. -To enable others .to fully understand my invention, I .will proceed to describe the several functions of my improvements in the 'order in which Ihave placed them in the vforegoing recital 'of the nature of my invention.

The first part of my invention is shown as applied andintended to be used in such hand-stamps as are con structed with-.a vibrating bar, which bar carries 'the die or ink-ribbon; ',A, in the accompanying drawings, being the vibrating bar, pivoted to a standard, C, rising` from astock, D, which carries the bed-,plate E; andF being the head ofthe vibrating bar, carrying the roll of ink-ribbon J .Tand the types K. i

These constitute the principal parts of a vibrating lever lhand-press, and 4to'none of them d o I lay any claim, either separately or in combination. i i I a a (see particularly figs.. 3 and 4) are cavities, which are inade in the sides of the head or end ofthe vibrat-- ing bar A, and intended for the reception of the ink-ribbon.` I wish it distinctly noticed that Vthese cavities open outward, that is to say, they are concavewith reference to the head itself of thebar, and that in them the rolls of ink-ribbon can liepartially concealed. i

An instance of cavities made in the head of -the vibrating bar of a hand-press is shown in the patent of D. H. Chamberlain, but these are made inside the head of thevibrating bar, and open inward, that is,they are convex with reference to the head vof the vibratingbar. l i

Now I contend that I' gain, among minor ones, two important advantages by making these` cavities in thel outside of the head of the vibrating bar: I

- 1. That with the use of a cap or cover concealing these cavities, I can entirely close the rolls of ribboni 2. That the 'shaft which carries the roll is more accessible, and therefore thcinkribbon when used suffi# ciently long can be easily renewed and la new one' attached. i

Another advantage is that the head of the vibrating bar can be made smaller, and at the same time contain a greater length of ribbon than inthe press above alluded to', andthe convenience of a small head on the bar enables the person using the stamp to give the impression with' more precision, for the reason that he can see and manage his workbetter.

The second part of my invention relates to a movable cap., designated by the letter 6(refer to figs; 1 and'2,)

to be used in connection with the cavities above described.

t In the present instance this cap is madeof ,a sheet 'of thin metal, curved in such manner as to Ht over the Whole top of the head of the vibrating bar, suiiicient-space, however, being left at each end for' theinkribbon to pass out from the feeding to the'win'ding-up shaft.

To secure it a scre\ v-p in, e, projects up from the top of the head ofthe vibrating bar, or, morespecifically,x

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fromthepjtopzf'vthe. partition wall, between the cavities a a, which latter form a shonlderfover wjliipch'the cap rcst's',da suitable hole or -opening being' made through-it to permit of' its being placed 'over the screw and shoul er. 'i

Theknob or handle Gr of the press'is intended toscrew down on this pin, which, as is "obvious, secures'tbe vcap in place. 4 l

The advantages of having this 'a removable cap are apparent. The third part o f my invention relates to the employment of a spr carrier K in its proper place. v I i o It consists in. this instance of a piece of metal bent-in'thefform of a loop,4 its two ends lying parallel with each other, and its middle forming the loop ;4 thus it'is -virtually aspring, and it is appliedby a pin or screw, e, which bolts its two endsA to the front or face of the head' of the vibrating bar.

ing-catch, d, for holding the die or type- It always can be madeto press against'the die or plate carrying the types or design with a nniform force;

and it does not by continued turning-become loose, and therefore inefficient.

Hence, 'the advantages of such a catch y applied to a hand-stamp are obvious.

The fourth part of my invention consists in a novel manner cf attaching the ink-ribbon to its shafts.

It may be well here to state that heretofore this has beendone by making a permanent loop on the-end' of the ribbon, and so placing it on'the shaft thatit willcncircle one-half of the' shaft; or the -end'has been covered or piped so as. toprevent it coming .throughrthe slotin the shaft after it has been inserted.-

-N ow, it is desirable to dispense with every means of attachmentA which increases the thickness of the ribbon at its ends, for this AAreason,f(and it is Va very importantonez) in inking'the ribbonsthey are passed through what arecalled inkingrollersf, and these are so close together (and it is necessary to have them so) that nothing thicker than `the mer'e single` thickness of theribbon can pass through them, else they could not beinked properly; hence, a loop or piping at one or both ends retards andemb'arrasses the operation of inking the'ribhons very much. v A Indeed, when the ribbons are made with a loop o r piping, or in any way that increases the thickness of the ends, they cannot be colored perfectly except by hand,and it will be understood that it is impracticable to loop orpipe the ends of 'the ribbon after-the'same has been colored. v

- To attach the ribbon according to my invention, I make use of the ordinary split shaft I.

Af loop is formed at theends of thc ribbon by simply doubling over but no t securing the end. This loop Vis thrust through the split in the shaft, and a pin, g, runl through it, as shown in iig. 3, andthe pin drawn .up

against the shaft, where it is tightly held.

This simple manner of attaching the ink-rib -as is obviousfrom-the foregoing remarks. d

Having thus described my invention, I claim as new, and desire to secure by Letters Patent- The manner herein shown and described of attaching the nkfribbo'n to its shafts.

NATI-IL.. L. CHAMBERLAIN.

bons to their shafts in hand-stamps is novnel and important,

Witnesses:'

M; M.,L1vrNesroN, C; L. ToPLIrF. 

